金属玻璃(Fe_0.6Ni_0.4)₈₂Si₈B₁₀的等温晶化动力学研究

金属玻璃(Fe 0.6 Ni 0.4 ) 82 Si 8 B 10 的等温晶化动力学研究 AN INVESTIGATION ON THE ISOTHERMAL KINETICS OF CRYSTALLIZATION OF A METALLIC GLASS (Fe 0.8 Ni 0.4 ) 82 Si 8 B 10 唐忠勋 first-author 胡昌霁 田德诚 用热电势（TEP）、X射线衍射和差热分析（DTA）研究了(Fe 0.6 Ni 0.4 ) S i 8 B 10 金属玻璃的晶化动力学。实验结果表明其晶化过程分两个阶段进行,转变过程是;非晶态—→非晶态+立方Fe（Si）+立方（FeNi）—→立方Fe（Si）+立方（FeNi）+立方（Ni,Fe）+正方Fe 2 B.从TEP和DTA实验的结果估算出第一阶段和第二阶段转变的表观激活能分别为2.8eV/atom和3.4eV/atom。对电阻率及反常Hall系数随等温退火时间的变化也进行了研究。 The kinetics of Crystallization of a metallic glass (Fe 0.6 Ni 0.4 ) 82 Si 8 B 10 were studied by thermoelectric power（TEP） measurement, X-ray diffraction and differential thermal analysis（DTA）. The experimental results show that the Crystallization proceeds in a two-step way. The sequence of transformation can be described as: Amorphous state→Amorphous+Cubic Fe（Si）+Cubic （FeNi）→Cubic Fe（Si）+Cubic （FeNi）+Cubic（Ni, Fe）+Tetragonal Fe 2 B. The activation energies for the first and second transformations estimated from TEP and DTA experiments are 2.8eV/atom and 3.4eV/atom respectively. The changes of electric resistivity and anomalous Hall coefficient as a function of isothermal annealing duration were also studied. 金属玻璃 结构弛豫 晶化动力学 势电势测量 Hall效应 Glassy Metals Structural Relaxation Crystallization Kinetics Thermoelectric Power Measttrements Hall effect 国家科委;中国科学院科学基金 1987-01-01 2021-04-01 1